Mendocino County, CA

357 public highway bridges

Mendocino County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Mendocino County, California contains 357 public highway bridges. Roughly 32.2% are rated “Good,” 51.8% “Fair,” and 7.3% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

357
Total Bridges
32.2%
Good
51.8%
Fair
7.3%
Poor Condition

Condition Distribution

Good
32.2% (115)
Fair
51.8% (185)
Poor
7.3% (26)

All Bridges (357)

MOUNTAIN HOUSE RD

Fair

Over: CUMMISKEY CREEK

2.2 MI N SR 128, Mendocino, CA

Built 1913 Load: 18.8 t ADT: 1,252

RG STATE PARK ROAD

Fair

Over: RUSSIAN GULCH

RUSSIAN GULCH STATE PARK, Mendocino, CA

Built 1953 Load: 18.8 t ADT: 15,000

RIDGEWAY HWY CR249

Fair

Over: WHITNEY CREEK

4.4 MI N JCT EEL RIVER RD, Mendocino, CA

Built 1960 Load: 19.1 t ADT: 68

STATE ROUTE 1

Fair

Over: GARCIA RIVER

01-MEN-001-18.50, Mendocino, CA

Built 1938 Load: 19.4 t ADT: 2,100

DOS RIOS RD

Fair

Over: EEL RIVER & NCRRA (NWP)

0.5 MI NW OF SR 162, Mendocino, CA

Built 1966 Load: 19.4 t ADT: 143

USAL ROAD

Fair

Over: USAL CREEK

5.9 MI N JCT SR 1, Mendocino, CA

Built 1955 Load: 19.4 t ADT: 24

OLD TOLL RD/CR 108

Fair

Over: MC DOWELL CREEK

0.05 MI S SR 175, Mendocino, CA

Built 1969 Load: 19.8 t ADT: 60

OLD TOLL RD/CR 108

Fair

Over: COLEMAN CREEK

2.7 MI S S.R. 175, Mendocino, CA

Built 1940 Load: 19.8 t ADT: 72

PRIMROSE DR

Fair

Over: WILLITS CREEK

0.075 MI S LUPINE RD, Mendocino, CA

Built 1967 Load: 19.8 t ADT: 545

U.S. HIGHWAY 101

Fair

Over: ROBINSON CREEK

01-MEN-101-20.91, Mendocino, CA

Built 1940 Load: 20.4 t ADT: 7,350

STATE ROUTE 101

Fair

Over: NCRRA/NWP RR

01-MEN-020-35.63, Mendocino, CA

Built 1969 Load: 20.4 t ADT: 13,500

STATE PARK ROAD

Fair

Over: LITTLE RIVER

VAN DAMME STATE PARK, Mendocino, CA

Built 1995 Load: 20.4 t ADT: 100

BRANSCOMB ROAD

Fair

Over: REDWOOD CREEK

0.8 MI W INTX CR 320, Mendocino, CA

Built 1981 Load: 20.7 t ADT: 104

STATE ROUTE 1

Fair

Over: ALDER CREEK

01-MEN-001-22.73, Mendocino, CA

Built 1947 Load: 21.1 t ADT: 1,800

SHERWOOD RD

Fair

Over: SAM WATT CREEK

2.7 MI S US 101, Mendocino, CA

Built 1960 Load: 21.1 t ADT: 103

U.S. HIGHWAY 101

Fair

Over: SR 271 (@ PM 0.02)

01-MEN-101-R84.68, Mendocino, CA

Built 1967 Load: 21.4 t ADT: 6,150

E COMMERCIAL ST

Fair

Over: BROADDUS CREEK

0.3 MI E JCT SR 101, Mendocino, CA

Built 1966 Load: 21.4 t ADT: 1,000

GUNTLY RD (CR 260)

Fair

Over: COLD CREEK

0.20 MI N SH 20, Mendocino, CA

Built 1922 Load: 21.4 t ADT: 27

FOREST ROAD 320

Fair

Over: SOUTH FORK NOYO RIVER

PARLIN FORK CONSERVATION, Mendocino, CA

Built 1948 Load: 21.4 t ADT: 125

JACK OF HEARTS ROA

Fair

Over: JACK OF HEARTS CREEK

13.5 mi NE of DeHaven, Mendocino, CA

Built 1998 Load: 21.4 t ADT: 50

STATE ROUTE 128

Fair

Over: ORNBAUN CREEK

01-MEN-128-33.89, Mendocino, CA

Built 1939 Load: 21.7 t ADT: 2,050

HUTSELL RD (CR123)

Fair

Over: ROBINSON CREEK

0.1 MI SW SR 128, Mendocino, CA

Built 1960 Load: 21.7 t ADT: 139

ELKHORN ROAD

Fair

Over: RANCHERIA CREEK

4.5 MI SOUTH OF SR 128, Mendocino, CA

Built 1985 Load: 21.7 t ADT: 165

OLD RIVER ROAD

Fair

Over: PARSONS CREEK

7.0 MI S/O TALMAGE RD, Mendocino, CA

Built 1948 Load: 22.0 t ADT: 515

STATE ROUTE 162

Fair

Over: RODEO CREEK

01-MEN-162-10.08, Mendocino, CA

Built 1940 Load: 22.7 t ADT: 860

IRR SHERWOOD ROAD

Fair

Over: SHERWOOD CREEK

10.1 MI NE OF US 101, Mendocino, CA

Built 1947 Load: 22.7 t ADT: 139

ROAD B

Fair

Over: SALT HOLLOW CREEK

0.8 MI EAST OF EAST ROAD, Mendocino, CA

Built 1967 Load: 22.7 t ADT: 399

STATE ROUTE 271

Fair

Over: SOUTH FORK EEL RIVER

01-MEN-271-22.57, Mendocino, CA

Built 1917 Load: 23.0 t ADT: 95

STATE ROUTE 128

Fair

Over: INDIAN CREEK

01-MEN-128-23.34, Mendocino, CA

Built 1953 Load: 23.0 t ADT: 4,150

U.S. HIGHWAY 101

Fair

Over: RUSSIAN RIVER

01-MEN-101-9.24, Mendocino, CA

Built 1934 Load: 23.0 t ADT: 13,800

U.S. HIGHWAY 101

Fair

Over: SOUTH FORK EEL RIVER

01-MEN-101-R99.51, Mendocino, CA

Built 2009 Load: 23.0 t ADT: 6,100

STATE ROUTE 1

Fair

Over: ELK CREEK

01-MEN-001-31.35, Mendocino, CA

Built 1938 Load: 23.3 t ADT: 1,100

U.S. HIGHWAY 101

Fair

Over: OUTLET CRK & NCRA/NWP RR

01-MEN-101-57.67, Mendocino, CA

Built 1957 Load: 23.3 t ADT: 6,700

CEMETERY LANE

Fair

Over: GRIST CREEK

0.5 MI WEST OF SR 162, Mendocino, CA

Built 1960 Load: 23.3 t ADT: 72

CENTER VALLEY RD

Fair

Over: HAEHL CREEK

0.9 MI E SH 101, Mendocino, CA

Built 1953 Load: 23.7 t ADT: 1,166

STATE ROUTE 1

Fair

Over: JUG HANDLE CREEK

01-MEN-001-56.74, Mendocino, CA

Built 1938 Load: 24.0 t ADT: 10,350

CANYON RD

Fair

Over: BERRY CREEK

1.4 MI E JCT WITH CR 306, Mendocino, CA

Built 1960 Load: 24.0 t ADT: 408

U.S. HIGHWAY 101

Fair

Over: RATTLESNAKE CREEK

01-MEN-101-81.43, Mendocino, CA

Built 1931 Load: 24.3 t ADT: 6,200

STATE ROUTE 253

Fair

Over: SODA CREEK

01-MEN-253-3.47, Mendocino, CA

Built 1925 Load: 24.3 t ADT: 2,300

OAK ST

Fair

Over: ORRS CREEK

1 MI S GIBSON ST, Mendocino, CA

Built 1955 Load: 24.3 t ADT: 1,599

BRANSCOMB RD

Fair

Over: WINDEM CREEK

19.45 MI E FROM SH 1, Mendocino, CA

Built 1950 Load: 24.3 t ADT: 406

RUDDCK-CUNNINHM RD

Fair

Over: HILDRETH CREEK

0.35 MI S HOWELL CREEK RD, Mendocino, CA

Built 1955 Load: 24.3 t ADT: 619

TOMKI RD

Fair

Over: ROCKY CREEK

0.46 MI N CR 237, Mendocino, CA

Built 1933 Load: 24.3 t ADT: 512

TOMKI RD

Fair

Over: MOSSY CANYON CREEK

3.82 MI N CR 237, Mendocino, CA

Built 1960 Load: 24.3 t ADT: 393

POWER HOUSE RD

Fair

Over: BUSCH CREEK

0.3 MI N GIBSON LN, Mendocino, CA

Built 1948 Load: 24.3 t ADT: 440

SANFORD RANCH ROAD

Fair

Over: MC CLURE CREEK

0.5 MI N JCT WTH FAU 5222, Mendocino, CA

Built 1955 Load: 24.3 t ADT: 777

GEYSERS RD/CR 101A

Fair

Over: ASH CREEK

0.6 MI SE OF US HWY 101, Mendocino, CA

Built 1932 Load: 24.3 t ADT: 650

FOREST ROAD 600

Fair

Over: CASPAR CREEK

SOUTH OF JCT WITH RD 620, Mendocino, CA

Built 1972 Load: 24.3 t ADT: 10

STATE PARK ROAD

Fair

Over: LITTLE RIVER

VAN DAMME STATE PARK, Mendocino, CA

Built 1951 Load: 24.3 t ADT: 25

REEVES CANYON ROAD

Fair

Over: MILL CREEK

4.5 MI W US 101, Mendocino, CA

Built 1980 Load: 24.6 t ADT: 105

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.